Soak your hand in water for awhile, and then try to get it out again. If that doesn't work, it'll come out naturally soon.

It's just a splinter...it's not like a stake is in your hand. It'll come out when you shower most likely.

You have two choices here. You could either listen to your teacher, or go see a qualified doctor.

that's great. just bandage up your hand and use it as an excuse to not do your school work.

Cut your whole hand off OP. Trust me, I'm a doctor.

"wait until the wound gets infected" uh... what?

Figure out which way it went in, then use a credit card or something similar to provide constant, even pressure and force it out. You could also soak it in water for a while. Just don't wait to get an infection; there's a reason he's a teacher and not a doctor.

I literally have had a splinter in one of my fingers for years. My body encapsulated it somehow, I sometimes make jokes about it as functioning as a second bone

I got a 1.5-inch splinter completely wedged under my fingernail once, and that's actually one of the choices the ER doctor gave me. He said they could either anesthetize my finger and dig it out with a giant needle (which is what I ended up choosing), or I could wait for it to get infected and see if the pus pushed it out. He also said that it could stay wedged in there, get infected, and not come out on its own, at which point I'd have to go back to the doctor and have them dig it out while it was infected. So, go to the doctor.

Well, guess you won't be spanking the monkey with that hand any time soon, huh?